The ICE does NOT show up as a comm port, but the ICE IS in the programmer list as if it is supported.
What am I missing?

I am just trying to burn a bootloader into a SAMD21.

Thanks,

Jim

I think I've used it and you have to Upload using programmer" but it was a while back so I'm not sure. I think I had to manually update the Arduino setup file to get it to work. However, why don't you just use the Atmel Studio software with the ICE? It's much simpler that way.